Revert of This CL replaces user_manager::UserID with AccountId.

chrome/browser/sync/sync_ui_util.cc

Index: chrome/browser/sync/sync_ui_util.cc
diff --git a/chrome/browser/sync/sync_ui_util.cc b/chrome/browser/sync/sync_ui_util.cc
index 5c55de96ab14e5850c78aff8d2bb27cee3a52486..ca2e8ecec0efc9700c3e37c4b2f0891c55182d71 100644
--- a/chrome/browser/sync/sync_ui_util.cc
+++ b/chrome/browser/sync/sync_ui_util.cc
@@ -35,7 +35,6 @@
 #include "ui/base/l10n/l10n_util.h"
 
 #if defined(OS_CHROMEOS)
-#include "components/signin/core/account_id/account_id.h"
 #include "components/user_manager/user_manager.h"
 #endif  // defined(OS_CHROMEOS)
 
@@ -64,7 +63,7 @@
     // On CrOS user email is sanitized and then passed to the signin manager.
     // Original email (containing dots) is stored as "display email".
     user_display_name = user_manager::UserManager::Get()->GetUserDisplayEmail(
-        AccountId::FromUserEmail(user_display_name));
+        user_display_name);
   }
 #endif  // defined(OS_CHROMEOS)